Unfortunately I can't recommend this place. The apartment itself is ok, but the location suffers from severe flooding during heavy rain. I was at the apartment for 7 days. On 2 of those days when I was trying to return to the apartment in the early evening I had to wade through flood water that was between ankle and knee deep as all of the surrounding roads effectively turned into rivers. On 2 other days I was unable to leave the apartment in the evening because of the flooding. Heavy rain during the late afternoon/evening is a very frequent occurrence during the rainy season in Bangkok and I definitely would not stay in this location again.
I was also disappointed that the photos of the apartment show that there is a dining table and stools, but they are not there.
On the positive side, Sirichol responds quickly to communication and arranged for workmen to sort out issues at the start of my stay. Wifi works well.
Outside rainy season it's probably a reasonable place to stay. Between 10 and 15 minutes walk to the BTS, but not an easy walk if you're dragging luggage because of the terrain.